“What does rapid eye blinking indicate?”

Eye blinking can be caused by eye irritation or visual problems which in turn cause headache. Other causes include anxiety, fatigue and rarely a movement disorder. I would see a primary care provider first and then possibly a neurologist.

While both conditions are common and usually fairly benign, having them occur concurrently although may still be benign and unrelated. If persistent, it would warrant further neurological assessment and testing. There could be a multitude of conditions, most benign, but others not so, that should be evaluated and ruled out. I would suggest you discuss this with your parents and/or a family member and see a neurologist or your primary for appropriate evaluation and referral to a specialist.
Hope this offers some guidance. 

Dr. F.